Lever system



Jan 6, 1931. c. cHAPuzs ETAL LEVER 'SYSTEM Filed June 1. 1928 mV DPatentedv Jan. 6, 1931 PATENT. .OFFICE CHARLES cHArUIs AND PIERREvDEssAULEs, or 'Cir'aLoNss-SAONE, FRANCE LEVER SYSTEM Application ledJune 1,1928, Serial No. 282,184,and in France June 8, 1927.

This invention relates to improvements in lever systems for receiving aforce and transmitting it in a line parallel With that in Which Y itAwas applied.

According to the invention tvvo principalY Fig. 3 is a sectionalelevation on line 3-3 of Fig. l.

According to the preferred form of the invention two levers al, a2 areconnected to gether by a pin b. The ylever a is pivoted about astationary pin c. The arm a2 is pivoted about a movable ystud D andcarries at one end a point of attachmente.

One end of the lever a? is connected by a pin f1 in a slot fto an arm gWhich is pivoted at 71. on to a link c' oscillating about a stationarypointr 7' the arm g being provided at its other end with a projection kwhich Works in a longitudinal slot Z in the framework. rFhis same end ofthe arm g is also provided With a slotted heart-shaped cam m engaged bya pin n carried by a further lever 0 pivoted about a stationary pin pwhich arni carries the aforesaid point of oscillation D of `the arm a2.y

To assist the Working of the pin n in the cam fm; an auxiliary lever gis pivoted about a and provided with a small pin r Which travels over aportion of the outer surface s of the cam m to ease the pin over thedead center position. This pin 1 may be re# placed, by a runner bearingon the cam surface. 1 In operation, if the lever al is given an angulardisplacement'the pin D above Which the arm a2 pivots will move from Z toZ1 through an angle B causing the point e to move to el. (Fig. 2.) iDuring this movement the pin f1 on the arm g has been dis-` placed'to agreater extent in the slot f as the pin n has traveled to one end of theslot in the cam m.

vrihis arrangement of levers is applicable for transmittingareciprocating motion act-v n ing on a straight line With either anincreased or a decreased displacement, according to the length of thearms ai and a2.

What We claim as our invention and desire to protect by Letters Patentis A lever system comprising a frame, an operating` arm pivotallyconnected thereto, a second arm'pivotally connected to the operatingarm, a stud on the other end of said second arm entering a Vslot in saidframe and a link also connecting thesecond arm to the frame, a camsurface mounted on the second arm, a second link and a pin on said linkengagii'ig the' cam surface, a second pin carried by said link, afurther lever pivoted upon such pin, a second pin on said lever by whichit is connected to the iirst mentioned lever, this further ylevery beingthat from Which power is delivered, and a guide link pivotedV to theframe and to the pin travelling over the cam to facilitate the Workingof this latter.

In VWitness whereof We aiiiX our signatures.

CHARLES CHAPUIS. PIERRE DESSAULES.

